1406093809 has 4 divisors (see below), whose sum is σ = 1407250404. Its totient is φ = 1404937216.

The previous prime is 1406093791. The next prime is 1406093813. The reversal of 1406093809 is 9083906041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 734247409 + 671846400 = 27097^2 + 25920^2 .

It is a cyclic number.

It is not a de Polignac number, because 1406093809 - 2¹³ = 1406085617 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1406093849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576472 + ... + 578905.

It is an arithmetic number, because the mean of its divisors is an integer number (351812601).

Almost surely, 2^1406093809 is an apocalyptic number.

It is an amenable number.

1406093809 is a deficient number, since it is larger than the sum of its proper divisors (1156595).

1406093809 is a wasteful number, since it uses less digits than its factorization.

1406093809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156594.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 1406093809 is about 37497.9173955034. The cubic root of 1406093809 is about 1120.3097062834.

The spelling of 1406093809 in words is "one billion, four hundred six million, ninety-three thousand, eight hundred nine".